Question

If the cell of an organism is heterozygous for two pairs of genes represented by Aa, Bb, undergoes meiosis, then the possible genotypic combination of gametes will be

• A. AB, Ab, aB, ab
• B. AB, ab
• C. Aa, Bb
• D. A, a, B, b

Answer 1

The correct option is A AB, Ab, aB, ab

Heterozygous Aa and Bb will give genotype of AaBb.

It gives gametes like : AB, Ab, aB and ab.

There are two alleles : n is thus equal to 2. The maximum number of combinations possible is 2${}^2$ = 4.